Shoe Size Chart
Note: Please contact Atreyu support at support@atreyurunning.com if you have questions on sizing.
According to many athletes, The Daily Trainer and Base Model both fit comparable to "true to size" options. Alternatively, the Race Model and The Base Trail run about 1/2 size aggressive so we like to suggest that athletes size up 1/2 size from the Daily Trainer or Base Model.
| US (unisex) | CM | EUR | UK |
| M4/W5.5 | 23 | 36.0 | 3 |
| M4.5/W6 | 23 | 36.5 | 3.5 |
| M5/W6.5 | 23.5 | 37.5 | 4 |
| M5.5/W7 | 24 | 38.0 | 4.5 |
| M6/W7.5 | 24 | 38.5 | 5 |
| M6.5/W8 | 24.5 | 39 | 5.5 |
| M7/W8.5 | 25 | 40 | 6 |
| M7.5/W9 | 25.5 | 40.5 | 6.5 |
| M8/W9.5 | 26 | 41.0 | 7 |
| M8.5/W10 | 26.5 | 42.0 | 7.5 |
| M9/W10.5 | 27 | 42.5 | 8 |
| M9.5/W11 | 27.5 | 43.0 | 8.5 |
| M10/W11.5 | 28 | 44.0 | 9 |
| M10.5/W12 | 28.5 | 44.5 | 9.5 |
| M11/W12.5 | 29 | 45.0 | 10 |
| M11.5/W13 | 29.5 | 45.5 | 10.5 |
| M12/W13.5 | 30 | 46.0 | 11 |
| M12.5/W14 | 30.5 | 46.5 | 11.5 |
| M13/W14.5 | 31 | 47.5 | 12 |
| M14/W15.5 | 32 | 48.5 | 13 |
